<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>
<body>
    
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keyWord">
        <button @click="sortType = 2">年龄升序</button>
        <button @click="sortType = 1">年龄降序</button>
        <button @click="sortType = 0">原顺序</button>
        <ul>
            <li v-for="(p, index) in filPersons" :key="p.id">
                {{p.name}}-{{p.age}}--{{p.sex}}
            </li>
        </ul>

    </div>

    <script>



        new Vue({
            el: '#root',
            data: {
                sortType: 0, //0原顺序 1降序 2升序
                keyWord: '',
                persons: [
                    {
                        id: '001',
                        name: '马冬梅',
                        age: 15,
                        sex: '女'
                    },
                    {
                        id: '002',
                        name: '周冬雨',
                        age: 33,
                        sex: '女'
                    },
                    {
                        id: '003',
                        name: '周杰伦',
                        age: 24,
                        sex: '男'
                    },
                    {
                        id: '004',
                        name: '温兆伦',
                        age: 13,
                        sex: '男'
                    },
                ],
            },
            computed: {
                filPersons () {
                    const arr = this.persons.filter((p)=>{
                        return p.name.indexOf(this.keyWord) !== -1
                    })
                    //判断是否需要排序
                    if(this.sortType) {
                        arr.sort((p1,p2)=>{
                            return this.sortType === 1? p2.age - p1.age: p1.age - p2.age
                        })
                    }
                    return arr
                }
            }
        })

    </script>

</body>
</html>